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Table 3 Relationship between variables and the EQ-5D index - pooled effect and heterogeneity from evidence synthesis across studies

From: Relationship between the EQ-5D index and measures of clinical outcomes in selected studies of cardiovascular interventions

Variable Pooled effect (95% CI) Heterogeneity as measured by I2, p-value
Age (10 year increment) 0.02 (-0.01, 0.04) 61%, < 0.001
Sex (Men vs. women) 0.09 (0.04, 0.14) 93%, <0.001
ETT (1 minute increment) 0.019 (0.014, 0.025) 36%, 0.10
CCS (1 class increase) 0.11 (0.09, 0.13) 86%, <0.001
SAQ - ECS (10 unit increment) 0.066 (0.053, 0.079) 87%, <0.001
SAQ - ASS (10 unit increment) 0.039 (0.029, 0.049) 51%, 0.02
SAQ - AFS (10 unit increment) 0.052 (0.039, 0.067) 87%, <0.001
SAQ - TSS (10 unit increment) 0.044 (0.032, 0.056) 0, 0.45
SAQ - DPS (10 unit increment) 0.063 (0.047, 0.079) 87%, <0.001
SF-6D (0.10 unit increment) 0.17 (0.16, 0.19) 83%, <0.001
  1. Key: EQ-5D - EuroQol 5D, I2 - I2 index for quantifying heterogeneity, ETT - Treadmill exercise test, CCS - Canadian Cardiovascular Society angina classification, SAQ - Seattle Angina Questionnaire, ECS - exertional capacity scale, ASS - angina severity scale, AFS - anginal frequency scale, TSS - treatment satisfaction scale, DPS - disease perception scale, SF-6D - short form 6D